Mathieu is still recovering from tearing the anterior collateral ligament and lateral collateral ligament in his left knee during a game last December, which caused him to be placed on season-ending injured reserve on two days later.

Speaking shortly after the injuries occurred, Cards head coach Bruce Arians stated that the former LSU star wouldn't likely to be medically cleared for the start of next summer's training camp after undergoing surgery.

He finished his rookie campaign with 68 tackles, two interceptions and one sack over 13 games.